How to Enhance ICT Coverage with Boundary Scan

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Expert Parallel Test System
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Expert Parallel Test System
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Expand PCB Test Coverage

In-circuit testing (ICT) identifies electrical defects such as shorts and opens by probing physical test points on a printed circuit board (PCB). Boundary-scan testing, based on IEEE 1149.x standards, enables access to digital interconnections and internal nodes of integrated circuits without requiring physical probes. Combining these methods allows test engineers to validate both accessible and inaccessible nodes within complex PCB designs.

The integrated test process requires a manufacturing environment capable of coordinating ICT and boundary-scan execution within a unified system. The setup requires integration between the ICT system, boundary-scan instrumentation, automated sequencing software, and the device under test to ensure synchronized execution, stable signal integrity, and consistent fault coverage across complex PCB assemblies.

Integrated Boundary-Scan ICT Solution

Integrating boundary scan testing into manufacturing test operations requires coordinating the in-circuit test system, boundary scan analyzer, and automated test software to improve fault detection coverage across PCB assemblies. The Keysight i7090 in-line in-circuit test system integrates the x1149 boundary scan analyzer, Dynamic Link Library (DLL) connectivity, and Open Test Automation Platform (OpenTAP) software to execute boundary scan routines and electrical defect validation within a unified manufacturing test environment.

The system enables the test controller to initiate boundary scan execution and coordinate communication between the boundary scan analyzer and device under test. This ensures that boundary-scan routines are executed together with in-circuit tests within a synchronized manufacturing test process. By integrating automated test sequencing, digital interconnect validation, and in-system programming capabilities, the solution improves fault coverage, diagnostic resolution, repeatability, and manufacturing test efficiency for complex PCB assemblies.

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See Block Diagram of Integrated Boundary-Scan ICT Solution

Block diagram of integrated boundary-scan ICT solution

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